The rather fascinating tale of midwifery and murder in York, England set in the mid 1640s is the topic of our conversation with Sam Thomas, author of “The Midwife’s Tale,” and “The Harlot’s Tale.” While researching English history for his Ph.D. thesis, Thomas happened on to the Will of Bridget Hodgson, a midwife. A fictionalized version of her life forms the basis for Thomas’s mystery series set in York, in which Bridget Hodgson is the protagonist.

Our conversation with Sam Thomas, recorded by phone on December 27, 2013 from his home near Cleveland, Ohio, where he teaches high-school history, begins with his characterization of York, England, in 1644.

The books Sam Thomas recommends are “An Instance of the Finger Post,” by Iain Pears, and “The Lock Artist,” by Steve Hamilton.